Parallel is a series of experimental videos in 20 parts. View all of them here: Parallel.
Parallel: Plot a curve. From points along the curve extend lines perpendicular to the plane of the curve. Make two or more such overlapping objects. Rotate. Maintain parallel lines. In a few variations, extend lines to a second, smaller curve, as in a cone. View from a line of sight perpendicular to the plane of the curves.